Hi, You could use st_convexHull on the point set and then buffer it with st_buffer. (st_concaveHull may give you better results on polygon approximation (see: http://postgis.refractions.net/documentation/manual-2.0/ST_ConcaveHull.html)
Nicolas On 10 September 2012 20:39, René Fournier <m...@renefournier.com> wrote: > I've written a script to migrate location data from MySQL to PostGIS. > Each region contains 5-20 locations. I would like my script to create a > simple polygon for each region that encompasses its locations (lat/lng > points). I say simple in the sense of not too many vertices (< 10), even if > the region contains 20 points.(The easiest thing would be a bounding box, but > I would like it a bit more defined than that.) Additionally, I would like > the polygon to be a bit bigger (say, by 10 meters) than the points it > contains. > > Just wondering if this is something that can be done in a PostGIS query or > PHP using some algorithm for simple. What would you recommend? Thanks! > > ...Rene > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
